Instrument positioning device for building surveying and mapping

Abstract

The utility model provides a building surveying and mapping instrument positioning device which comprises a base, a stand column is vertically and fixedly connected to the center of the bottom of the base, and three supporting legs are hinged to the bottom of the base in an array mode. The traction disc capable of vertically sliding is arranged on the surface of the stand column, the hinged plate is rotationally connected to the side face of the traction disc, and finally the supporting seat is hinged between the hinged plate and the supporting leg, so that the supporting seat can be horizontally opened after the supporting leg is opened, and the supporting seat can be stably placed on a road surface or a sidewalk; the stability of the stand column and the three supporting legs when the stand column and the three supporting legs support the base is improved, the traction disc can drive the sliding ring to synchronously move during action, the sliding ring can achieve positioning of the traction disc through cooperation of through holes, a first spherical protrusion and a second spherical protrusion before and after action, and therefore positioning of the supporting base can be achieved after the supporting legs are opened; therefore, the stability of the base is further improved, and the surveying and mapping instrument can be stably positioned.

Description

Technical Field

[0001] This utility model relates to the field of architectural surveying technology, specifically to a positioning device for architectural surveying instruments. Background Technology

[0002] Surveying instruments are various instruments used for surveying work during the planning, design, construction, and operation management stages of engineering construction. They are used for orientation, distance measurement, angle measurement, height measurement, mapping, and photogrammetry. They consist of components such as a telescope, horizontal and vertical circles, and a base. According to the reading device, they are divided into vernier theodolites, optical theodolites, and electronic theodolites.

[0003] Most surveying instruments are supported and positioned by positioning devices to ensure they remain level. Existing positioning devices are mostly tripods. While these devices can provide support and positioning, the contact area between the bottom of the tripod and the contact surface is small, and they lack a horizontal support structure, resulting in low stability. In flat areas such as roads and sidewalks, the tripod is prone to tilting or even falling over due to collisions with pedestrians or other objects, thus affecting architectural surveying work. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning device for architectural surveying instruments to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A positioning device for building surveying instruments includes a base, a column is vertically fixedly connected to the center of the bottom of the base, three legs are hinged in an array at the bottom of the base, the three legs are connected to the column through a stabilizing mechanism, and a limit plate is fixedly installed at the center of the bottom of the column.

[0007] The stabilizing mechanism includes three support bases, three hinge plates, three connecting rods, a traction disc, and a sliding ring. The traction disc and the sliding ring are slidably connected to the surface of the column. The sliding ring and the traction disc are fixedly connected by three arrayed connecting rods. One end of each of the three hinge plates is rotatably connected to the side of the traction disc, and the other end of each of the three hinge plates is rotatably connected to the surface of the three support bases. One end of each of the three support bases is rotatably connected to the end of each of the three legs.

[0008] Preferably, the surface of the sliding ring is provided with a through hole, and the surface of the column is provided with a first spherical protrusion and a second spherical protrusion that are horizontally elastically movable. Initially, one end of the first spherical protrusion is engaged in the through hole.

[0009] Preferably, the surface of the support base is provided with a through groove, and a traction seat is horizontally slidably connected in the through groove through a drive mechanism. One end of the traction seat is fixedly connected to a support arm, and one end of the support arm is in contact with the surface of the connecting rod.

[0010] Preferably, one end of the support arm is provided with an arc-shaped groove, the radius of the arc-shaped groove projected onto the horizontal plane is the same as the radius of the projection of the end face of the connecting rod onto the horizontal plane, and the arc-shaped groove is in contact with the surface of the connecting rod.

[0011] Preferably, the drive mechanism includes a threaded rod and a knob. The threaded rod is rotatably connected to the inner wall of the through groove, and one end of the threaded rod passes through the support seat and extends to the other side of the support seat. The knob is fixedly connected to the free end of the threaded rod, and the traction seat is threadedly connected to the surface of the threaded rod.

[0012] Preferably, the surface of the support leg is provided with a receiving groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This invention features a vertically sliding traction disc on the surface of the column, with a hinged plate rotatably connected to the side of the traction disc. Finally, a support seat is hinged between the hinged plate and the outriggers. This allows the support seat to open horizontally when the outriggers are extended, enabling the support seat to be stably placed on the road or sidewalk. At this time, the support seat forms a horizontal support structure between the outriggers and the column, increasing the stability of the column and the three outriggers when supporting the base. Furthermore, when the traction disc moves, it drives the sliding ring to move synchronously. Before and after the movement, the sliding ring can position the traction disc through the through hole and the cooperation of the first and second spherical protrusions, thereby enabling the positioning of the support seat after the outriggers are extended, further improving the stability of the base and facilitating the stable positioning of the surveying instrument. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure between the support base and the traction disc of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure between the traction seat and the support seat of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure between the sliding ring and the traction disc of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the support leg after it is folded up.

[0020] In the diagram: 1. Base; 2. Column; 3. Traction disc; 4. Support leg; 5. Limiting plate; 6. Support seat; 7. Hinge plate; 8. Connecting rod; 9. Sliding ring; 10. Through hole; 11. First spherical protrusion; 12. Second spherical protrusion; 13. Through groove; 14. Traction seat; 15. Support arm; 16. Arc groove; 17. Threaded rod; 18. Knob; 19. Receiving groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a positioning device for architectural surveying instruments, including a base 1. A column 2 is vertically fixedly connected to the center of the bottom of the base 1. Three legs 4 are hinged in an array at the bottom of the base 1. The three legs 4 are connected to the column 2 through a stabilizing mechanism. A limit plate 5 is fixedly installed at the center of the bottom of the column 2. The stabilizing mechanism includes three support seats 6, three hinge plates 7, three connecting rods 8, a traction disc 3, and a sliding ring 9. The traction disc 3 and the sliding ring 9 are slidably connected to the surface of the column 2. The sliding ring 9 and the traction disc 3 are fixedly connected through three arrayed connecting rods 8. One end of each of the three hinge plates 7 is rotatably connected to the side of the traction disc 3. The other end of each of the three hinge plates 7 is rotatably connected to the surface of the three support seats 6. One end of each of the three support seats 6 is rotatably connected to the end of each of the three legs 4.

[0023] Please see Figure 1 and 5 , Figure 5 This is a schematic diagram showing the three support legs 4 housed at the bottom of the column 2 in this embodiment. During use, the three support legs 4 need to be opened (e.g., Figure 1 As shown), at this time, the bottom of the support leg 4 will drive the bottom of the support seat 6 to move synchronously. Since one end of the support seat 6 will move away from the column 2, the other end of the support seat 6 can pull the traction plate 3 down on the surface of the column 2 through the hinge plate 7 until the support seat 6 is placed horizontally on the road or sidewalk. At this time, the support seat 6 can drive the traction plate 3 to be placed on the surface of the limiting plate 5 through the hinge plate 7. Since all three support seats 6 and one limiting plate 5 are placed on the road or sidewalk, the stability of the base 1 is greatly increased, making it less likely for the base 1 to tilt or even fall over under the impact of external forces.

[0024] It should be noted that in this embodiment, a single leg 4 and the column 2 can form an approximate triangular structure, which inherently has a certain degree of stability. In addition, the contact area between the support base 6 and the road surface or sidewalk is larger than that in the prior art, thus providing higher stability compared to the prior art.

[0025] The surface of the sliding ring 9 is provided with a through hole 10, and the surface of the column 2 is provided with a first spherical protrusion 11 and a second spherical protrusion 12 that are horizontally elastically movable. Initially, one end of the first spherical protrusion 11 is engaged in the through hole 10.

[0026] Please see Figure 1 , 4 In order to further ensure the stability of the base 1, this embodiment can lock the sliding ring 9 on the surface of the column 2 by passing the first spherical protrusion 11 and the second spherical protrusion 12 through the through hole 10. In the initial state, the first spherical protrusion 11 is engaged in the inside of the groove. When the support leg 4 needs to be opened, the user presses the first spherical protrusion 11 to make it move horizontally inward toward the inside of the column 2. At this time, the first spherical protrusion 11 will disengage from the inside of the through hole 10 so that the traction plate 3 can be driven down by the sliding ring 9. When the traction plate 3 moves down to the maximum stroke, that is, the traction plate 3 contacts the limiting plate 5. At this time, the sliding ring 9 just drives the through hole 10 to the surface of the second spherical protrusion 12. The sliding ring 9 first squeezes the second spherical protrusion 12. As the sliding ring 9 moves down, the second spherical protrusion 12 will eventually move into the inside of the through hole 10 under the action of gravity to achieve the locking between the column 2 and the sliding ring 9.

[0027] It should be noted that the first spherical protrusion 11 and the second spherical protrusion 12 have the same structure, both of which are horizontally slidably mounted on the surface of the column 2 by means of a spring, but they have different functions. The first spherical protrusion 11 is used to lock the sliding ring 9 in the initial state, while the second spherical protrusion 12 is used to lock the sliding ring 9 after the support leg 4 is opened.

[0028] The surface of the support base 6 is provided with a through groove 13. A traction seat 14 is horizontally slidably connected in the through groove 13 through a drive mechanism. One end of the traction seat 14 is fixedly connected to a support arm 15. One end of the support arm 15 is in contact with the surface of the connecting rod 8. One end of the support arm 15 is provided with an arc-shaped groove 16. The radius of the arc-shaped groove 16 projected on the horizontal plane is the same as the radius of the projection of the end face of the connecting rod 8 on the horizontal plane. The arc-shaped groove 16 is in contact with the surface of the connecting rod 8. The drive mechanism includes a threaded rod 17 and a knob 18. The threaded rod 17 is rotatably connected to the inner wall of the through groove 13, and one end of the threaded rod 17 passes through the support base 6 and extends to the other side of the support base 6. The knob 18 is fixedly connected to the free end of the threaded rod 17. The traction seat 14 is threadedly connected to the surface of the threaded rod 17.

[0029] Please see Figure 2 and 3 To further enhance overall stability, this embodiment connects the traction disc 3 and the support base 6 as a whole by horizontally driving the support arm 15 to move. When the three support legs 4 are open, the support base 6 is in a horizontal state. At this time, rotating the knob 18 drives the threaded rod 17 to rotate. When the threaded rod 17 rotates, it drives the traction seat 14 to move towards the column 2 inside the through groove 13. At this time, the traction seat 14 can drive the support arm 15 to move synchronously until the support arm 15 drives the arc groove 16 to abut against the side of the connecting rod 8. At this time, the bottom of one end of the support arm 15 will contact the top of the traction disc 3, and the bottom of the traction disc 3 will contact the limiting plate 5. Therefore, the traction disc 3 can be vertically locked by the limiting plate 5 and the support arm 15, thereby further increasing the overall stability and facilitating the stable use of the surveying instrument.

[0030] The surface of the bracket is provided with a receiving groove 19.

[0031] Please see Figure 1 and 5 As can be seen from the figure, since the support arm 15 has a certain height, one side of the support arm 15 will extend into the receiving groove 19 when stored. Therefore, the receiving groove 19 is designed to facilitate the overall storage of the support arm 15.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning device for architectural surveying instruments, comprising a base (1), characterized in that: A column (2) is vertically fixedly connected to the center of the bottom of the base (1). Three legs (4) are hinged in an array at the bottom of the base (1). The three legs (4) are connected to the column (2) through a stabilizing mechanism. A limit plate (5) is fixedly installed at the center of the bottom of the column (2). The stabilizing mechanism includes three support seats (6), three hinge plates (7), three connecting rods (8), a traction disc (3), and a sliding ring (9). The traction disc (3) and the sliding ring (9) are slidably connected to the surface of the column (2). The sliding ring (9) and the traction disc (3) are fixedly connected by three arrayed connecting rods (8). One end of each of the three hinge plates (7) is rotatably connected to the side of the traction disc (3), and the other end of each of the three hinge plates (7) is rotatably connected to the surface of the three support seats (6). One end of each of the three support seats (6) is rotatably connected to the end of each of the three legs (4).

2. The positioning device for architectural surveying instruments according to claim 1, characterized in that: The surface of the sliding ring (9) is provided with a through hole (10), and the surface of the column (2) is provided with a first spherical protrusion (11) and a second spherical protrusion (12) that are horizontally elastically movable. Initially, one end of the first spherical protrusion (11) is engaged in the through hole (10).

3. The positioning device for architectural surveying instruments according to claim 2, characterized in that: The surface of the support base (6) is provided with a through groove (13), and a traction seat (14) is horizontally slidably connected in the through groove (13) through a drive mechanism. One end of the traction seat (14) is fixedly connected to a support arm (15), and one end of the support arm (15) is in contact with the surface of the connecting rod (8).

4. The positioning device for architectural surveying instruments according to claim 3, characterized in that: One end of the support arm (15) is provided with an arc groove (16). The radius of the arc groove (16) projected on the horizontal plane is the same as the radius of the projection of the end face of the connecting rod (8) on the horizontal plane. The arc groove (16) is in contact with the surface of the connecting rod (8).

5. A positioning device for architectural surveying instruments according to claim 3, characterized in that: The drive mechanism includes a threaded rod (17) and a knob (18). The threaded rod (17) is rotatably connected to the inner wall of the through groove (13), and one end of the threaded rod (17) passes through the support seat (6) and extends to the other side of the support seat (6). The knob (18) is fixedly connected to the free end of the threaded rod (17), and the traction seat (14) is threadedly connected to the surface of the threaded rod (17).

6. The positioning device for architectural surveying instruments according to claim 1, characterized in that: The surface of the support leg (4) is provided with a receiving groove (19).

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